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To what extent is schema evolution available in ORC files in Hive 0.13?

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Are the changes in schema like adding, deleting, renaming, modifying data type in columns permitted without breaking anything in ORC files in Hive 0.13.

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Accepted Solutions

Re: To what extent is schema evolution available in ORC files in Hive 0.13?

Adding columns to the end of the table works from Hive 1.2 (via HDP 2.5.4).

In Hive 2.1, you get additional abilities to change the column types. In the eventual Hive 2.2, you'll get the ability to delete and reorder columns.

Hive .13 is a little early for those features

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1 REPLY 1

Re: To what extent is schema evolution available in ORC files in Hive 0.13?

Adding columns to the end of the table works from Hive 1.2 (via HDP 2.5.4).

In Hive 2.1, you get additional abilities to change the column types. In the eventual Hive 2.2, you'll get the ability to delete and reorder columns.

Hive .13 is a little early for those features

View solution in original post